What device is bbu

BBU is the indoor baseband processing unit. The indoor baseband processing unit is a distributed base station architecture that uses a large number of 3G networks. The RRU and BBU need to be connected by optical fiber. One BBU can support multiple RRUs; using the BBU RRU multi-channel solution can effectively solve the indoor coverage of large venues.

The operating environment of this tutorial: Windows 7 system, Dell G3 computer.

BBU is the indoor baseband processing unit. The indoor baseband processing unit (Building Base band Unite) is a distributed base station architecture widely used in 3G networks. It is required between the RRU (Radio Frequency Remote Module) and the BBU (Baseband Processing Unit). Connect with fiber optics. One BBU can support multiple RRUs. The BBU RRU multi-channel solution can effectively solve the indoor coverage of large venues.

BBU main function introduction: BBU is the baseband processing unit of the base station. It provides external interfaces and completes the system's resource management, operation and maintenance, and environmental monitoring functions. The BBU includes the main control unit FSMF module, the baseband expansion unit FBBA and the transmission expansion unit FTIF.

Features of BBU:

Usually indoor distribution systems use cable electrical distribution, while the BBU RRU solution uses optical fiber transmission distribution. The baseband BBU (BuildingBasebandUnite indoor baseband processing unit) is centrally placed in the computer room, and the RRU (Rera()teRadiOUnite remote radio frequency module) can be installed on the floor. Optical fiber transmission is used between the BBU and the RRU. The RRU then passes through the coaxial cable and power splitter ( Coupler), etc. are connected to the antenna, that is, the backbone uses optical fiber and the branch uses coaxial cable.

Unique multi-channel algorithm achieves spatial isolation, which can reduce interference; coverage and capacity can be planned independently; reduce dependence on trunk amplifiers; baseband capacity can be shared, with large capacity expansion; optical fiber has no loss, and trunk deployment Simple and flexible RRU deployment. However, the disadvantage is that it requires an additional photoelectric conversion unit, and the optical fiber is easily damaged and needs to be armored. The difference between TD-SCDMA indoor distribution system and other 3G: TD-SCDMA is time division duplex (TDD), WCDMA and cdma2000 are frequency division duplex (FDD), and the technical system of the air interface is also different. Therefore, its indoor distribution system is also different. different.

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